ZHANG Zhi-hong, ZHAO Xiu-feng, ZHANG Li-zhong
(Department of Chemistry and Applied Chemistry, Changji University, Changji 831100, China)
Abstract: Heteropoly compound(C12H8N2)2.5·H3PW12O40 ((Phen)2.5HPW) was synthesized via a solution reaction between phosphotungstic acid (HPW) and Phenanthroline (Phen), and (Phen)2.5 HPW/WO3 composite hollow microspheres were prepared with WO3 hollow microspheres dipping in Phenanthroline and phosphotungstic acid solution subsequently. Inductively coupled plasma atomic emission spectroscopy (ICP-AES), elemental analysis (EA) , thermogravimetry-differential thermal analysis (TG-DTA), Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), and UV-vis diffuse reflectance spectroscopy (UV-vis DRS) were used for characterization. Photocatalytic performance of the heteropoly compound (Phen)2.5HPW, WO3 hollow microspheres and (Phen)2.5 HPW/WO3 composite hollow microspheres were tested by photocatalytic decomposition of methyl orange aqueous solution upon irradiation of high pressure mercury lamp, respectively. The results showed that the activity of (Phen)2.5HPW/WO3 composite hollow microspheres was higher than that of (Phen)2.5HPW and WO3 hollow microspheres respectively, and deactivation of (Phen)2.5HPW/WO3 composite hollow microspheres was negligible when the catalyst was separated for recycling applications.
Key words: Heteropoly compound; Tungsten trioxide; Composite hollow microspheres; Pohotcatalysis
E-mail: zhaoxiufeng19670@126.com
Journal of Molecular Catalysis, Vol. 25, Issue 2, 2011, 152~156
